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October 2002 Monthly Operating Report for Duane Arnold Energy Center
	ML023330325
Person / Time
Site:	Duane Arnold
Issue date:	11/15/2002
From:	Bjorseth J; Nuclear Management Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	GL-97-002, NG-02-1036
	Download: ML023330325 (7)
	v • d • e

Duane Arnold Energy Center 3277 DAEC Road Palo, IA 52324-9785 Committed to NuclearExcellence Operatedby NuclearManagement Company, LLC November 15, 2002 NG-02-1036 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station 0-P 1-17 Washington, DC 20555-0001

Subject:

Duane Arnold Energy Center Docket No: 50-331 Operating License: DPR-49 October 2002 Monthly Operating Report File: A-118d Please find enclosed the Duane Arnold Energy Center Monthly Operating Report. The report has been prepared in accordance with the guidelines of NRC Generic Letter 97-02: Revised Contents Of The Monthly Operating Report, and distribution has been made in accordance with DAEC Technical Specifications, Section 5.6.4.

Vey rlyou ,

Plant Manager-Nuclear JKB/RBW Enclosures

November 15, 2002 NG-02-1036 Page 2 of 2 cc:

Mr. James E. Dyer Ms. Lisa Stump Regional Administrator, Region III Iowa State Utilities Board U.S. Nuclear Regulatory Commission Lucas State Office Building 801 Warrenville Road Des Moines, IA 50319 Lisle, IL 60532-4351 Ms. Barbara Lewis Dr. William A. Jacobs, Jr.

McGraw-Hill, Inc. GDS Associates, Inc.

1200 G Street NW, Suite 1100 1850 Parkway Place, Suite 720 Washington, DC 20005 Marietta, GA 30068-8237 Mr. Dennis Murdock Mr. Dale Arends Central Iowa Power Cooperative Corn Belt Power Cooperative Box 2517 1300 13th Street North Cedar Rapids, IA 52406 Humboldt, IA 50548 Document Control Desk Mr. Al Gutterman INPO Records Center Morgan Lewis 700 Galleria Parkway 1111 Pennsylvania Avenue, NW Atlanta, GA 30339-5957 Washington, DC 20004 Mr. Darl Hood NRC Resident Inspector 1 White Flint North Mail Stop 8H4A CTS Project 11555 Rockville Pike Rockville, MD 20852 IRMS

OPERATING DATA REPORT DOCKET NO: 50-331 DATE: 11-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 OPERATING STATUS

1. Unit Name: Duane Arnold Energy Center

2. Reporting Period: October 2002

3. Licensed Thermal Power (MWth): 1912 Tech. Spec. Amendment 243 and TSCR for extended power uprate was implemented November 7, 2001. Currentoperating thermal power, as limited by balance-of-plantequipment, is 1790.

4. Nameplate Rating (Gross MWe DER): 676.425 Current ratedoutput, adjustedfor as-built balance-of-plant conditions is 614.0.

5. Design Electrical Rating (Net MWe DER): 581.4

6. Maximum Dependable Capacity (Gross MWe MDC): 593.1

7. Maximum Dependable Capacity (Net MWe MDC): 565.5

8. If Changes Occur in Capacity Ratings (Items Number 3 through 7) since the last report, give reasons: N/A

9. Power Level to Which Restricted, If Any (Net MWe): N/A

10. Reasons for Restrictions, If Any: N/A Oct-02 2002 Cumulative Cumulative

11. Hours in Reporting Period 745.0 7,296.0 243,240.0

12. Number of Hours Reactor Was Critical 745.0 6,801.2 192,781.8 0.0 0.0 192.8

13. Reactor Reserve Shutdown Hours 745.0 6,684.4 188,609.3

14. Hours Generator On-Line 0.0 0.0 0.0

15. Unit Reserve Shutdown Hours

16. Gross Thermal Energy Generated (MW H) 1,302,148.8 11,620,804.7 276,119,434.5

17. Gross Electrical Energy Generated (MW H) 1 439,438.0 3,949,241.0 92,683,458.6 87,11_3,350.5

18. Net Electrical Energy Generated (MWH) 415,892.7 3,737,724:5

19. Unit Service Factor 100.0% 91.6% 77.5%

20. Unit Availability Factor 100.0% 91.6% 77.5%

21. Unit Capacity Factor (Using MDC Net) 98.7% 90.8% 70.5%

22. Unit Capacity Factor (Using DER Net) 96.0% 88.4% 68.4%

23. Unit Forced Outage Rate 0.0% 2.2% 8.3%

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): Refuel Outage, March 24, 2003, 25 days.

25. If Shutdown at End of Report Period, Estimated Date of Startup: N/A

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-331 DATE: 11-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 MONTH October 2002 Day Average Daily Power Level (MWe-Net) 1 565 2 569 3 576 4 572 5 578 6 572 7 575 8 571 9 570 10 567 11 565 12 570 13 576 14 575 15 575 16 577 17 573 18 569 19 333 20 366 21 563 22 576 23 578 24 572 25 573 26 574 27 576 28 574 29 573 30 575 31 577

REFUELING INFORMATION DOCKET NO: 50-331 DATE: 11-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318

1. Name of facility. Duane Arnold Energy Center

2. Scheduled date for next refueling shutdown. March 24, 2003

3. Scheduled date for restart following refueling. April 18, 2003

4. Will refueling or resumption of operation thereafter require a technical specification change or other license amendment? No

5. Scheduled date(s) for submitting proposed licensing action and supporting information. N/A

6. Important licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures. N/A

7. Current fuel assemblies inventory Number of Projected date of last Fuel refueling that can be Assemblies discharged (after allowing margin for maintenance of continuous full-core discharge capability)

Installed into reactor core 368 Discharged from core to Spent Fuel Storage Pool 1912 Scheduled for transfer to Dry Fuel Storage November 2003 610 Installed capacity of Spent Fuel Storage Pool 2411 2008 Licensed capacity of Spent Fuel Storage Pool (with re-racking) 2829 2014 Licensed capacity of Spent Fuel Storage Pool and Cask Pool (with 3152 reracking)

DOCKET NO: 50-331 DATE: 11-15-2002 Unit: Duane Arnold Energv Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: OCTOBER 2002 No. Date Type Duration Reason Method of Licensee Cause (1) (Hours) (2) Shutting Event Down Reactor Report #

(3) 9 10/18 - 10/21 S 0.0 B 5 N/A Remove "A" Cooling (18.9 Effective- Tower from service to Full-Power- temporarily divert circ Hours) water flow from four "A" cooling tower cells to temporary modular cooling towers for duration of planned repair to the "A" cooling tower.

- F: Forced - Reason 3 - Method:

S: Scheduled A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continued E-Operator Training & License Examination 5-Reduced Load F-Administrative 9-Other (Explain)

G-Operational Error (Explain)

H-Other (Explain)

DOCKET NO.: 50-331 DATE: 11-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 Monthly Operational Overview for October 2002 At the beginning of October, the DAEC had continuously operated at full-power for 14 days following the August 29"'

September 9"' outage and the September 9 th - 16th de-rate. For the first 17 days of October, the DAEC operated at full thermal power except for a brief downpower to 94% on October 3rd to perform a load-line adjustment.

On October 5th between 06:15 and 06:25, while at full-thermal power, gross electric output dropped from 616 to 608 MWe, and the 1E-5B Feedwater Heater Hi-Level alarm annunciated several times and was reset. Operators investigated and determined that the feedwater heater drain valve was not operating correctly and the dump valve was having to remain 60%

open to control level. The decision was to defer this repair until the next plant shutdown (presently scheduled for March 24, 2003). The associated production loss would amount to the equivalent of three full-power-days over this time period.

Beginning at 23:03 on October 18, operators reduced power to 59% to perform turbine control valve testing and to remove the "A" Cooling Tower from service for installation often modular cooling tower cells. The modular cells temporarily replace the "A" Cooling Tower "G", "H", "J", and "K" cells, which are being demolished and reconstructed. This involved cutting and capping the 48" distribution header, damming the cold water basin, and diverting circ water to the modular cells.

The "A" Cooling Tower "A - F" cells were then reconnected and the "A" tower returned to service at 18:16 on October 20th.

Return to full-power was commenced at 23:57 October 20th, and full-power was achieved at 06:13 on October 21.

At 01:01 on October 27, the plant process computer was removed from service for I hour 33 minutes to reset the clock from Daylight Savings to Central Standard time. Except for four brief (less than one hour) power reductions to 95% on the 21 st (two), the 22nd, and the 30th to adjust control rods, the DAEC operated at full thermal power throughout the remainder of the month.

Following is the allocation of production and losses: Electrical Capacity Factor Full Power Hours Output MWe % of 614 MWe Equivalent (Taget Output) (FPHeq)

Net Electric Output 558.25 90.92% 677.35 Plant House Loads (while on-line) +31.50 +5.13% 38.25

,Subtotal: Gross Electric Output 589.75 96.05% 715.60 Capacity Losses (departures from full thermal power): 15.59 2.54% 18.92 Install Modular Cooling Tower Cells 10/18 23:03 - 10/21 06:13 CRD Adjustments 10/02 00:01 -00:53; 10/21 11:58 - 12:38 & 21:00 0.07 0.01% 0.08 22:04, 10/22 05:09 - 05:53, 10/30 01:00 - 02:01 1Maintain Margin to 1790 Administrative MWth Limit 0.35 0.06% 0.43 iEfficiency Losses (occur even at full thermal power): 8.24 1.34% 9.99 Unidentified residual; stuck-open 5B FWH Drain Valve

-/+Seasonal Effects ( i.e., hot weather decrease) 0.00%

!Subtotal: On-line Losses (Capacity, Efficiency, and Weather): 24.25 3.95% 29.40 Licensing Action Summary:

Plant Availability: 100% Unplanned Auto Scrams (while critical) this month: 0 Number of reportable events: 0 Unplanned Auto Scrams (while critical) last 12 months: 0 Main Steam Safety/Relief Valve Challenges this month: 0